What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 99894-8: Calcium oxalate monohydrate crystals Computer assisted Ql (Urine sed)

Name: LOINC Code 99894-8: Calcium oxalate monohydrate crystals Computer assisted Ql (Urine sed)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:34.291Z

99894-8 is a LOINC code used to identify Calcium oxalate monohydrate crystals Computer assisted Ql (Urine sed) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Calcium oxalate monohydrate crystals. It is commonly used with the system or sample type Urine sed.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Calcium oxalate monohydrate crystals. It is commonly used with the system or sample type Urine sed.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Observation
Method: Computer assisted

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Calcium oxalate monohydrate crystals [Presence] in Urine sediment by Computer assisted method
Calcium oxalate monohydrate crystals
Artificial Intelligence; Automated detection; Ca; CaC2O4; CaC2O4.H2O; Cal; CaOx; COM Cry; Comp Assist; Crys; Cryst; Crystal; Ethanedioate; Ethanedioic acid; Monohydrt; Ordinal; Oxal; Oxalic acid; Point in time; PR; QL; Qual; Qualitative; Random; Screen; UA; UR; URINALYSIS; Urine sediment; Urn; UrnS; Whewelite; Whewellite

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Calcium oxalate monohydrate crystals Computer assisted Ql (Urine sed)Calcium oxalate monohydrate crystals [Presence] in Urine sediment by Computer assisted methodCOM Cry UrnS Ql Comp AssistCalcium oxalate monohydrate crystalsUACalcium oxalate monohydrate crystals, Urine sedimentPrThr

Frequently asked questions

Code details

Code99894-8

SystemLOINC

Display nameCalcium oxalate monohydrate crystals Computer assisted Ql (Urine sed)

DescriptionCalcium oxalate monohydrate crystals

Short nameCOM Cry UrnS Ql Comp Assist

ComponentCalcium oxalate monohydrate crystals

PropertyPrThr

TimingPt

System (specimen)Urine sed

ScaleOrd

MethodComputer assisted

ClassUA

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Consumer names

Calcium oxalate monohydrate crystals, Urine sediment

Part names

Calcium oxalate monohydrate crystalsPrThrPtUrine sedOrdComputer assistedPresence or ThresholdPoint in time (spot)Urine sedimentComputer assisted method

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.